Inner tube for pneumatic tires.



F. FENTON. INNER TUBE FOR PNEUMATIC TIRE?.

`APPLICATION FILED MAYZQ. 1916 afenwd Oct. 21'-, 1916.

FRANK FENTON, OF AKRON, QHIO, ASSIGNOR TO THE MLLER RUBBER COMPANY, FAKRON, OHIO, A CORPORATION 0F Oil-H0.

y Innen' TUBE ron ennui/mmc riens.-

Specification of Letters Patent.

Patented met. dd, l fitti.

@riginal application led .Tanuary 18, 1916, Serial No. 'flh now patentNo. Llfle, dated July 11,@1916.

Divided and this application iled lley 29, 1916. Serial No. 100,633. i

To all er1/wm t may concern.'

Be it known that I, FRANK Fnnron, a citizen of the nUnited States, andresident of Akron, Ohio, have invented certain new `and usefulImprovements in inner Tubes for Pneumatic Tires, of which the follow.

tieularly for use in connection with motorva simple and effective meansby which the overlapping ends may be readily connected and disconnectedand which means will be located wholly between the juxtaposed faces ofsaid ends leaving the exterior of Athe tube entirely free from anyprojection,

as it has been found in practice that any fastening vmeans which offersa projection or ridge, and especially ifvsuch projection be of a hardand non-yieldingcharacter,

produces a detrimental effect on the tire similar to a wrinkle or foldin the fabric.

The invention includes the novel arrangement and features ofconstruction hereinafter described and particularly de fined by the`appendI d claims, an embodiment of the invention being illustrated inthe accomlmnying drawing, in which,

Figure l is a side elevation of a tube einbodying my invention, the samebcinrshown inflated but with the ends detached Fig. 2 is a similar' viewshowing the ends ijverlapped and connected. Fig. 3 is a perspectivedetail showing the overlapping ends as they appear when deflated and inrendiness to be connected.

Referring by reference characters to these 'vulcanized to the tube.

drawings the letter A designates the usuall preferably form the dividedportion atv a point remote or spaced from the valve stem and thesedivided or separated ends are flattened or closed in a suitable manneras by vulcanizing the opposing walls together for a portion of theirlength, as indicated at' C, these ends are brought together andoverlapped after the tube has been placed within the outer case or shoe,and in order to hold them together without producing any bulge, ridge orprojection upon the cuter surface and without interfering with theresiliency of the tire at the point of overlap, 'l provide fastening`means located wholly between the overlapping portions.

in the forni shown inv the drawings such fastening means take the formof detach-- able fasteners 'of the ball and socket or Srlfwe fastenertype, as indicated at B3, ln ci to secure these fasteners vin' positionl preferalily first secure them to strips of fibrous material, indicatedat B, which fibrous strips are afterward cemented or llfhen the ends areto be connected, it is only necessary to place one end into overlappingposition upon the other end with the'respective fasteners in alineincntand snu p them together and when thus eoniiected, it will be seen, usshown in Fig. 2, that the tube is free from any external projectionwhich would have va detrimental effect upon the easing.

Havingr thus described my invention what lclaim is:

l. An inner tube for inflatable tires having end portions with the wallsvulcanized together to form fiat closed ends, said flattened endsoverlapping each other and having smooth continuous exterior surfaces,and separable fasteners, the parts of which are carried respectivelywholly by theljugtaposed faces of said overlapping' portions.-

2. An inner tube for inflatable tires having end portions with the wallsvulcanized togethey," to form fia-; olosec ends, said ends overappmg@zich oth@ with the dosed pari', o oooh and extendmg beyond andoverlying the natabe part of the adjoining and Wtnesses operating partsecured to the na'table por cion of the tubo. 10-

n testimony whereof.,- I .affix mysignlfture. 5"

FRANK FENTONQ C. A. WOLF, (5. E.' ROBERTS.

